Transmit (Tx) Request: Ipv4 - 0X20 - Digi XBee 3 Cellular LTE-M User Manual

API frames

Transmit (TX) Request: IPv4 - 0x20

Description
A TX Request message causes the device to transmit data in IPv4 format. A TX request frame for a
new destination creates a network socket. After the network socket is established, data from the
network that is received on the socket is sent out the device's serial port in the form of a Receive (RX)
Packet frame.
When you specify protocol 4 (TLS), the profile configuration specified by
form the TLS connection.
Note For NB-IoT, TCP support is dependent on the network. Contact your network provider for
details.
Format
The following table provides the contents of the frame. For details on frame structure, see
format.
Field name
Frame type
Frame ID
Destination
address
Destination port
Source port
Digi XBee® 3 Cellular LTE-M/NB-IoT Global Smart Modem User Guide
Field
value Data type Description
0x20 Byte
Byte Reference identifier used to match status responses. 0
disables the TX Status frame.
32-bit big
endian
16-bit
big endian
16-bit If the source port is 0, the device attempts to send the
big endian frame data using an existing open socket with a
destination that matches the destination address and
destination port fields of this frame. If there is no
matching socket, then the device attempts to open a
new socket.
If the source port is non-zero, the device attempts to
send the frame data using an existing open socket with
a source and destination that matches the source port,
destination address, and destination port fields of this
frame. If there is no matching socket, the TX Status
frame returns an error.
Transmit (TX) Request: IPv4 - 0x20
$0 (TLS Profile 0) is used to
API frame
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